Subway networks and their spatial equity in Seoul

Authors: Yena Song*, Chonnam National University, Keumsook Lee, Sungshin Women's University
Topics: Transportation Geography, Urban and Regional Planning, Spatial Analysis & Modeling
Keywords: subway networks, accessibility, equity, Seoul
Session Type: Paper
Day: 4/5/2019
Start / End Time: 1:10 PM / 2:50 PM
Room: Directors Room, Omni, West
Presentation File: No File Uploaded

In Seoul the subway system has been in use since 1974 and is the most frequently used travel mode accounting for approximately 39% of passenger journeys in 2016. Private vehicles are ranked 3rd and the local bus is the second frequently used mode. Over 65% of passenger journeys are carried out by two transit modes, subway and bus. As such the transit system is widely adopted by people and therefore, can have great impacts on their everyday life. However, it is easily noted that transit resources are not distributed spatially uniform, in other words, not all parts of the city gain the same benefits from their networks. This study aims to examine the inequity of spatial distribution of transit networks based on accessibility. We focus on the subway networks because of two reasons. Subway networks require large amount of public investment and distribution of their infrastructure cannot be easily mended compared to other transit systems. Therefore, the impacts of resource distribution persist longer and need to be more critically assessed. Accessibility of subway networks are calculated and then equity is measured with consideration of local demographic and economic characteristics. The results can be used to detect the areas with more or less benefits from current subway system and help to direct future transportation policy in Seoul.

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